HP 6125G Installation manual

HP 6125 Blade Switch Series
Layer 2 - LAN Switching
Command Reference
Part number: 5998-3166
Software version: Release 2103
Document version: 6W100-20120907

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© Copyright 2012 Hewlett-Packard Development Company, L.P.
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prior written consent of Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.
HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for errors contained
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herein.

i
Contents
Ethernet interface configuration commands··············································································································· 1
broadcast-suppression ·············································································································································1
default········································································································································································2
description·································································································································································2
display counters························································································································································3
display counters rate················································································································································4
display interface ·······················································································································································6
display loopback-detection··································································································································· 13
display packet-drop interface······························································································································· 14
display packet-drop summary ······························································································································ 15
display storm-constrain ········································································································································· 16
duplex····································································································································································· 17
flow-control····························································································································································· 18
flow-control receive enable ·································································································································· 18
flow-interval···························································································································································· 19
interface·································································································································································· 20
jumboframe enable ··············································································································································· 20
link-delay ································································································································································ 21
link-delay mode up················································································································································ 22
loopback ································································································································································ 22
loopback-detection action ···································································································································· 23
loopback-detection control enable ······················································································································ 24
loopback-detection enable ··································································································································· 25
loopback-detection interval-time ·························································································································· 26
loopback-detection per-vlan enable ···················································································································· 26
mdi ·········································································································································································· 27
multicast-suppression············································································································································· 28
port bridge enable ················································································································································ 29
reset counters interface ········································································································································· 29
reset packet-drop interface··································································································································· 30
shutdown ································································································································································ 30
speed ······································································································································································ 31
speed auto ····························································································································································· 32
storm-constrain ······················································································································································· 33
storm-constrain control ·········································································································································· 34
storm-constrain enable log ··································································································································· 34
storm-constrain enable trap ·································································································································· 35
storm-constrain interval ········································································································································· 36
unicast-suppression················································································································································ 36
virtual-cable-test ····················································································································································· 37
Loopback and null interface configuration commands ···························································································39
default····································································································································································· 39
description······························································································································································ 39
display interface loopback··································································································································· 40
display interface null ············································································································································· 43
interface loopback ················································································································································ 44
interface null··························································································································································· 45
reset counters interface loopback························································································································ 46

ii
reset counters interface null ·································································································································· 46
shutdown ································································································································································ 47
Bulk interface configuration commands ···················································································································48
interface range ······················································································································································ 48
interface range name············································································································································ 48
MAC address table configuration commands ·········································································································51
display mac-address ············································································································································· 51
display mac-address aging-time ·························································································································· 52
display mac-address mac-learning ······················································································································ 53
display mac-address statistics ······························································································································ 54
mac-address (interface view)································································································································ 55
mac-address (system view) ··································································································································· 56
mac-address mac-learning disable ······················································································································ 57
mac-address max-mac-count ································································································································ 58
mac-address timer ················································································································································· 59
MAC Information configuration commands·············································································································60
mac-address information enable (interface view) ······························································································ 60
mac-address information enable (system view)·································································································· 60
mac-address information interval························································································································· 61
mac-address information mode···························································································································· 61
mac-address information queue-length················································································································ 62
Ethernet link aggregation configuration commands································································································63
default····································································································································································· 63
description······························································································································································ 63
display interface ···················································································································································· 64
display lacp system-id ··········································································································································· 66
display link-aggregation load-sharing mode······································································································ 67
display link-aggregation member-port ················································································································ 69
display link-aggregation summary······················································································································· 71
display link-aggregation verbose ························································································································ 72
enable snmp trap updown ··································································································································· 74
interface bridge-aggregation ······························································································································· 75
lacp period short ··················································································································································· 76
lacp system-priority················································································································································ 76
link-aggregation load-sharing mode ··················································································································· 77
link-aggregation load-sharing mode local-first ··································································································· 78
link-aggregation mode·········································································································································· 79
link-aggregation port-priority································································································································ 79
link-aggregation selected-port minimum ············································································································· 80
port link-aggregation group ································································································································· 80
reset counters interface ········································································································································· 81
reset lacp statistics················································································································································· 82
shutdown ································································································································································ 82
Port isolation configuration commands ····················································································································84
display port-isolate group····································································································································· 84
port-isolate enable················································································································································· 85
Spanning tree configuration commands···················································································································87
active region-configuration··································································································································· 87
check region-configuration ··································································································································· 87
display stp ······························································································································································ 88
display stp abnormal-port····································································································································· 94

iii
display stp bpdu-statistics ····································································································································· 95
display stp down-port············································································································································ 97
display stp history·················································································································································· 98
display stp region-configuration ························································································································100
display stp root ····················································································································································101
display stp tc························································································································································102
instance ································································································································································103
region-name ·························································································································································104
reset stp ································································································································································104
revision-level·························································································································································105
stp bpdu-protection··············································································································································106
stp bridge-diameter ·············································································································································106
stp compliance·····················································································································································107
stp config-digest-snooping ··································································································································108
stp cost··································································································································································108
stp edged-port······················································································································································109
stp enable·····························································································································································110
stp loop-protection···············································································································································111
stp max-hops ························································································································································112
stp mcheck····························································································································································112
stp mode·······························································································································································113
stp no-agreement-check ······································································································································114
stp pathcost-standard ··········································································································································115
stp point-to-point ··················································································································································115
stp port priority ····················································································································································116
stp port-log ···························································································································································117
stp priority ····························································································································································118
stp region-configuration ······································································································································119
stp root primary ···················································································································································119
stp root secondary···············································································································································120
stp root-protection················································································································································121
stp tc-protection····················································································································································121
stp tc-protection threshold ···································································································································122
stp tc-snooping·····················································································································································122
stp timer forward-delay·······································································································································123
stp timer hello·······················································································································································124
stp timer max-age ················································································································································124
stp timer-factor ·····················································································································································125
stp transmit-limit ···················································································································································126
vlan-mapping modulo ·········································································································································127
BPDU tunneling configuration commands ············································································································· 128
bpdu-tunnel dot1q ···············································································································································128
bpdu-tunnel tunnel-dmac ·····································································································································129
VLAN configuration commands ····························································································································· 130
Basic VLAN configuration commands ·······················································································································130
default···································································································································································130
description····························································································································································130
display interface vlan-interface ··························································································································132
display vlan··························································································································································134
interface vlan-interface········································································································································136
ip address ····························································································································································137
mtu ········································································································································································138
name·····································································································································································138

iv
reset counters interface vlan-interface ···············································································································139
shutdown ······························································································································································140
vlan ·······································································································································································141
Port-based VLAN configuration commands···············································································································142
display port ··························································································································································142
port········································································································································································143
port access vlan···················································································································································144
port hybrid pvid···················································································································································144
port hybrid vlan ···················································································································································145
port link-type ························································································································································147
port trunk permit vlan··········································································································································148
port trunk pvid ·····················································································································································149
MAC-based VLAN configuration commands ············································································································150
display mac-vlan··················································································································································150
display mac-vlan interface··································································································································151
mac-vlan enable ··················································································································································152
mac-vlan mac-address·········································································································································153
mac-vlan trigger enable······································································································································153
port pvid disable ·················································································································································154
vlan precedence ··················································································································································155
Protocol-based VLAN configuration commands ·······································································································156
display protocol-vlan interface···························································································································156
display protocol-vlan vlan···································································································································157
port hybrid protocol-vlan ····································································································································158
protocol-vlan ························································································································································159
IP subnet-based VLAN configuration commands ······································································································161
display ip-subnet-vlan interface··························································································································161
display ip-subnet-vlan vlan ·································································································································162
ip-subnet-vlan ·······················································································································································163
port hybrid ip-subnet-vlan ···································································································································164
Isolate-user-VLAN configuration commands·········································································································· 166
display isolate-user-vlan ······································································································································166
isolate-user-vlan····················································································································································168
isolate-user-vlan enable·······································································································································169
port isolate-user-vlan promiscuous ·····················································································································169
port isolate-user-vlan host····································································································································171
Voice VLAN configuration commands··················································································································· 174
display voice vlan oui ·········································································································································174
display voice vlan state ······································································································································175
voice vlan aging··················································································································································176
voice vlan enable ················································································································································177
voice vlan mac-address ······································································································································177
voice vlan mode auto··········································································································································178
voice vlan qos······················································································································································179
voice vlan qos trust··············································································································································180
voice vlan security enable ··································································································································180
GVRP configuration commands ····························································································································· 182
display garp statistics··········································································································································182
display garp timer ···············································································································································183
display gvrp local-vlan········································································································································184
display gvrp state ················································································································································184
display gvrp statistics ··········································································································································186
display gvrp status···············································································································································187

v
display gvrp vlan-operation ·······························································································································188
garp timer hold····················································································································································188
garp timer join ·····················································································································································189
garp timer leave ··················································································································································190
garp timer leaveall ··············································································································································190
gvrp·······································································································································································191
gvrp registration ··················································································································································192
reset garp statistics ··············································································································································192
QinQ configuration commands ····························································································································· 194
nest········································································································································································194
qinq enable··························································································································································195
qinq ethernet-type customer-tag ·························································································································195
qinq ethernet-type service-tag·····························································································································196
qinq transparent-vlan ··········································································································································197
VLAN mapping configuration commands············································································································· 199
nest········································································································································································199
remark customer-vlan-id ······································································································································199
remark service-vlan-id ·········································································································································200
LLDP configuration commands································································································································ 201
display lldp local-information·····························································································································201
display lldp neighbor-information······················································································································204
display lldp statistics ···········································································································································210
display lldp status················································································································································211
display lldp tlv-config ··········································································································································213
lldp admin-status··················································································································································215
lldp check-change-interval ··································································································································215
lldp compliance admin-status cdp ·····················································································································216
lldp compliance cdp ···········································································································································217
lldp enable ···························································································································································217
lldp encapsulation snap······································································································································218
lldp fast-count·······················································································································································218
lldp hold-multiplier···············································································································································219
lldp management-address-format string ············································································································220
lldp management-address-tlv······························································································································220
lldp notification remote-change enable·············································································································221
lldp timer notification-interval ·····························································································································221
lldp timer reinit-delay ··········································································································································222
lldp timer tx-delay················································································································································222
lldp timer tx-interval ·············································································································································223
lldp tlv-enable·······················································································································································224
lldp voice-vlan······················································································································································226
Service loopback group configuration commands······························································································· 227
display service-loopback group·························································································································227
port service-loopback group ······························································································································228
service-loopback group ······································································································································228
Layer 2 forwarding configuration commands······································································································· 230
cut-through enable···············································································································································230
Support and other resources ·································································································································· 231
Contacting HP ······························································································································································231
Subscription service ············································································································································231
Related information······················································································································································231

vi
Documents····························································································································································231
Websites·······························································································································································231
Conventions ··································································································································································232
Index ········································································································································································ 234

1
Ethernet interface configuration commands
The Ethernet interface numbers in this document are for example, and do not mean that Ethernet
interfaces with these numbers exist on the switch.
broadcast-suppression
Syntax
broadcast-suppression { ratio |pps max-pps |kbps max-kbps }
undo broadcast-suppression
View
Ethernet interface view
Default level
2: System level
Parameters
ratio: Sets the broadcast suppression threshold as a percentage of the maximum interface rate, ranging
from 1 to 100. The smaller the percentage, the less broadcast traffic is allowed to pass through.
pps max-pps: Specifies the maximum number of broadcast packets that the Ethernet interface can
forward per second.
•For GE ports, the max-pps argument ranges from 1 to 1,488,100 pps.
•For 10-GE ports, the max-pps argument ranges from 1 to 14,881,000 pps.
kbps max-kbps: Specifies the maximum number of kilobits of broadcast traffic that the Ethernet interface
can forward per second.
•For GE ports, the max-kbps argument ranges from 1 to 1,024,000 kbps.
•For 10-GE ports, the max-kbps argument ranges from 1 to 10,240,000 kbps.
Description
Use broadcast-suppression to set the broadcast suppression threshold on one or multiple Ethernet
interfaces.
Use undo broadcast-suppression to restore the default.
By default, Ethernet interfaces do not suppress broadcast traffic.
When broadcast traffic exceeds the broadcast suppression threshold, the system discards broadcast
packets until the broadcast traffic drops below the threshold.
NOTE:
•If you set different broadcast suppression thresholds in Ethernet interface view multiple times, the one
configured last takes effect.
•For a particular type of traffic, configure either storm suppression or storm control, but not both. If both
of them are configured, you may fail to achieve the expected storm control effect.

2
Examples
# Set the broadcast suppression threshold to 20% on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] broadcast-suppression 20
default
Syntax
default
View
Ethernet interface view
Default level
2: System level
Parameters
None
Description
CAUTION:
The default command might interrupt ongoing network services. Make sure you are fully aware of the
impacts of this command when you perform it on a live network.
Use default to restore the default settings for an Ethernet interface.
This command might fail to restore the default settings for some commands for reasons such as command
dependencies and system restrictions. You can use the display this command in interface view to check
for these commands, and perform their undo forms or follow the command reference to individually
restore their default settings. If your restoration attempt still fails, follow the error message to resolve the
problem.
Examples
# Restore the default settings for interface GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] default
This command will restore the default settings. Continue? [Y/N]:y
description
Syntax
description text
undo description
View
Ethernet interface view

3
Default level
2: System level
Parameters
text: Specifies the interface description, a string of 1 to 80 characters. The string can include
case-sensitive letters, digits, special characters such as tilde (~), exclamation point (!), at sign (@), pound
sign (#), dollar sign ($), percent sign (%), caret (^), ampersand sign (&), asterisk (*), left brace({), right
brace (}), left parenthesis ((), right parenthesis ()), left bracket ([), right bracket (]), left angle bracket (<),
right angle bracket (>), hyphen (-), underscore(_), plus sign (+), equal sign (=), vertical bar (|), back
slash (\), colon (:), semi-colon (;) quotation marks ("), apostrophe ('), comma (,), dot (.), and slash (/),
spaces, and other Unicode characters and symbols.
When you configure a description, follow these guidelines:
•Each Unicode character takes the space of two regular characters.
•To use Unicode characters or symbols in an interface description, install the specific input method
editor and log in to the switch through remote login software that supports the character type.
•When the length of a description string reaches or exceeds the maximum line width on the terminal
software, the software starts a new line, possibly breaking a Unicode character into two. As a result,
garbled characters may be displayed at the end of a line.
Description
Use description to change the description of the interface.
Use undo description to restore the default.
The default description of an interface is the interface name plus Interface. For example,
GigabitEthernet1/0/1 Interface.
Related commands: display interface.
Examples
# Change the description of interface GigabitEthernet 1/0/1 to lanswitch-interface.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] description lanswitch-interface
display counters
Syntax
display counters {inbound |outbound } interface [ interface-type ] [ |{ begin | exclude | include }
regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
inbound: Displays inbound traffic statistics.
outbound: Displays outbound traffic statistics.
interface-type: Specifies an interface type.

4
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display counters to display traffic statistics for interfaces.
•If an interface type is specified, this command displays traffic statistics for all interfaces of the
specified type.
•If no interface type is specified, this command displays traffic statistics for all interfaces that have
traffic counters.
Examples
# Display inbound traffic statistics for all GigabitEthernet interfaces.
<Sysname> display counters inbound interface gigabitethernet
Interface Total(pkts) Broadcast(pkts) Multicast(pkts) Err(pkts)
GE1/0/1 100 100 0 0
GE1/0/2 0 0 0 0
GE1/0/3 Overflow Overflow Overflow Overflow
GE1/0/4 0 0 0 0
Overflow: more than 14 decimal digits(7 digits for column "Err").
--: not supported.
Table 1 Command output
Field Description
Interface Abbreviated interface name.
Total (pkts) Total number of packets received or sent through the interface.
Broadcast (pkts) Total number of broadcast packets received or sent through the interface.
Multicast (pkts) Total number of multicast packets received or sent through the interface.
Err (pkts) Total number of error packets received or sent through the interface.
Overflow: more than 14
decimal digits(7 digits for
column "Err").
The command displays Overflow, if any of the following applies:
•The data length of an error statistic is greater than 7 decimal digits.
•The data length of a non-error statistic is greater than 14 decimal digits.
--: not supported. The statistical item is not supported.
display counters rate
Syntax
display counters rate {inbound |outbound }interface [ interface-type ] [ |{ begin | exclude | include }
regular-expression ]

5
View
Any view
Default level
1: Monitor level
Parameters
inbound: Displays inbound traffic rate statistics.
outbound: Displays outbound traffic rate statistics.
interface-type: Specifies an interface type.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display counters rate to display traffic rate statistics over the last sampling interval.
The statistics cover only interfaces in up state. If an interface type is specified, the command displays
traffic rate statistics for all up interfaces of the specified type. If no interface type is specified, the
command displays traffic rate statistics for all up interfaces that have traffic counters.
To set the statistics polling interval, use the flow-interval command. The default statistics polling interval
is five minutes.
Related commands: flow-interval.
Examples
# Display the inbound traffic rate statistics for all GigabitEthernet interfaces.
<Sysname> display counters rate inbound interface gigabitethernet
Interface Total(pkts/sec) Broadcast(pkts/sec) Multicast(pkts/sec)
GE1/0/1 200 100 100
GE1/0/2 300 200 100
GE1/0/3 300 200 100
Overflow: more than 14 decimal digits.
--: not supported.
Table 2 Command output
Field Description
Interface Abbreviated interface name.
Total (pkts/sec) Average rate (in packets per second) of receiving or sending packets during
the sampling interval.
Broadcast (pkts/sec) Average rate (packets per second) of receiving or sending broadcast packets
during the sampling interval.

6
Field Description
Multicast (pkts/sec) Average rate (packets per second) of receiving or sending multicast packets
during the sampling interval.
Overflow: more than 14
decimal digits.
The command displays Overflow, if any of the following applies:
•The data length of an error statistic is greater than 7 decimal digits.
•The data length of a non-error statistic is greater than 14 decimal digits.
--: not supported. The statistical item is not supported.
display interface
Syntax
display interface [ interface-type ] [ brief [ down ] ] [ |{ begin | exclude | include } regular-expression ]
display interface interface-type interface-number [ brief ] [ |{ begin | exclude | include }
regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
brief: Displays brief interface information. If you do not specify this keyword, the command displays
detailed interface information.
down: Displays information about interfaces in down state and the causes. If you do not specify this
keyword, this command displays information about interfaces in all states.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display interface to display Ethernet interface information.
If no interface type is specified, this command displays information about all interfaces.
If an interface type is specified but no interface number is specified, this command displays information
about all interfaces of that type.
Related commands: interface.
Examples
# Display detailed information about interface GigabitEthernet 1/0/1.

7
<Sysname> display interface gigabitethernet 1/0/1
GigabitEthernet1/0/1 current state: DOWN
IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 000f-e2d2-58fb
Description: GigabitEthernet1/0/1 Interface
Loopback is not set
Media type is not sure,Port hardware type is No connector
1000Mbps-speed mode, full-duplex mode
Link speed type is force link, link duplex type is force link
Flow-control is enabled
The Maximum Frame Length is 9216
Broadcast MAX-ratio: 100%
Unicast MAX-ratio: 100%
Multicast MAX-ratio: 100%
Allow jumbo frame to pass
PVID: 1
Mdi type: auto
Port link-type: access
Tagged VLAN ID : none
Untagged VLAN ID : 1
Port priority: 0
Last clearing of counters: Never
Peak value of input: 0 bytes/sec, at 2000-06-13 15:27:44
Peak value of output: 0 bytes/sec, at 2000-06-13 15:27:44
Last 300 seconds input: 0 packets/sec 0 bytes/sec 0%
Last 300 seconds output: 0 packets/sec 0 bytes/sec 0%
Input (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Input (normal): 0 packets, - bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Input: 0 input errors, 0 runts, 0 giants, 0 throttles
0 CRC, 0 frame, - overruns, 0 aborts
- ignored, - parity errors
Output (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Output (normal): 0 packets, - bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Output: 0 output errors, - underruns, - buffer failures
0 aborts, 0 deferred, 0 collisions, 0 late collisions
0 lost carrier, - no carrier
Table 3 Command output
Field Description
GigabitEthernet1/0/1 current state Physical state of the Ethernet interface. For more information, see Table
4.
IP Packet Frame Type Ethernet framing format on the interface.
Hardware address Hardware address of the port.
Description Description of the interface.

8
Field Description
Loopback is not set The loopback testing function is disabled.
Unknown-speed mode The port speed is unknown.
unknown-duplex mode The duplex mode is unknown.
Link speed type is autonegotiation The interface will negotiate a speed with its peer.
link duplex type is autonegotiation The interface will negotiate a duplex mode with its peer.
The Maximum Frame Length Maximum Ethernet frame length allowed on the interface.
Broadcast MAX-ratio
Broadcast suppression threshold as a percentage of the interface
transmission capability. When the threshold is exceeded, the interface
drops broadcast packets.
Unicast MAX-ratio
Unknown unicast suppression threshold as a percentage of the
interface transmission capability. When the threshold is exceeded, the
interface drops unknown unicast packets.
Multicast MAX-ratio
Multicast suppression threshold as a percentage of the interface
transmission capability. When the threshold is exceeded, the interface
drops multicast packets.
Allow jumbo frame to pass Maximum length of Ethernet frames that are allowed to pass through
the interface.
PVID Port VLAN ID.
Mdi type Cable type.
Port link-type Link type of the interface, which could be access, trunk, or hybrid.
Tagged VLAN ID VLANs for which the interface sends packets without removing VLAN
tags.
Untagged VLAN ID VLANs for which the interface sends packets after removing VLAN
tags.
Last clearing of counters: Never
Time when the reset counters interface command was last used to clear
statistics on the interface. Never indicates that the reset counters
interface command was never used since the switch was started.
Peak value of input Peak value of inbound traffic, in Bps.
Peak value of output Peak value of outbound traffic, in Bps.
Last 300 seconds input: 0
packets/sec 0 bytes/sec
Last 300 seconds output: 0
packets/sec 0 bytes/sec
Average rate of input and output traffic in the last 300 seconds, in pps
and Bps.
Input (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0
multicasts, 0 pauses
Inbound traffic statistics (in packets and bytes) for the interface. All
inbound normal and abnormal packets (including unicast, broadcast,
and multicast), and pause frames were counted.
Input (normal): 0 packets, - bytes
0 unicasts, 0 broadcasts, 0
multicasts, 0 pauses
Inbound traffic statistics (in packets and bytes) for the interface. All
inbound normal packets (including unicast, broadcast, and multicast),
and pause frames were counted.
input errors Inbound packets with errors.
runts Inbound frames shorter than 64 bytes, in correct format, and
containing valid CRCs.

9
Field Description
giants
Inbound frames larger than the maximum frame length supported on
the interface.
•For an Ethernet interface that does not permit jumbo frames, giants
refer to frames larger than 1536 bytes (without VLAN tags) or 1540
bytes (with VLAN tags).
•For an Ethernet interface that permits jumbo frames, giants refer to
frames larger than the maximum length of Ethernet frames that are
allowed to pass through, which is configured when you configure
jumbo frame support on the interface.
- throttles Number of times that the port shut down due to buffer or CPU
overload.
frame Total number of inbound frames that contained checksum errors and a
non-integer number of bytes.
- overruns Number of packet drops because the input rate of the port exceeded
the queuing capability.
aborts
Total number of illegal inbound packets:
•Fragment frames—CRC error frames shorter than 64 bytes. The
length can be an integral or non-integral value.
•Jabber frames—CRC error frames greater than the maximum frame
length supported on the Ethernet interface (with an integral or
non-integral length). For an Ethernet interface that does not permit
jumbo frames, jabber frames refer to CRC error frames greater than
1518 bytes (without VLAN tags) or 1522 bytes (with VLAN tags). For
an Ethernet interface that permits jumbo frames, jabber frames refer
to CRC error frames greater than the maximum length of Ethernet
frames that are allowed to pass through the interface (which is
configured when you configure jumbo frame support on the
interface).
•Symbol error frames—Frames that contained at least one
undefined symbol.
•Unknown operation code frames—Non-pause MAC control frames
•Length error frames—Frames whose 802.3 length fields did not
accord with the actual frame length (46 to 1500 bytes).
ignored Number of inbound frames dropped because the receive buffer of the
port ran low.
- parity errors Total number of frames with parity errors.
Output (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0
multicasts, 0 pauses
Outbound traffic statistics (in packets and bytes) for the port. All
outbound normal and abnormal packets (including unicast, broadcast,
and multicast), and pause frames were counted.
Output (normal): 0 packets, - bytes
0 unicasts, 0 broadcasts, 0
multicasts, 0 pauses
Outbound normal traffic (including unicast, broadcast, and multicast)
and pause frame statistics (in packets and bytes) for the interface.
output errors Outbound packets with errors.
- underruns
Number of packet drops because the output rate of the interface
exceeded the output queuing capability. This is a low-probability
hardware anomaly.

10
Field Description
- buffer failures Number of packets dropped because the transmit buffer of the
interface ran low.
aborts Number of packets that failed to be transmitted, for example, because
of Ethernet collisions.
deferred Number of frames that the interface deferred to transmit because of
detected collisions.
collisions Number of frames that the interface stopped transmitting because
Ethernet collisions were detected during transmission.
late collisions Number of frames that the interface deferred to transmit after
transmitting their first 512 bits, because of detected collisions.
lost carrier Number of carrier losses during transmission. This counter applies to
serial WAN interfaces.
- no carrier
Number of times that the port failed to detect the carrier when
attempting to send frames. This counter applies to serial WAN
interfaces.
NOTE:
If an output field is not available, a hyphen (-) is displayed.
Table 4 Description on the possible physical states of a Ethernet interface
Field Description
UP The interface is physically up.
DOWN The interface is physically down, because no physical connection exists.
Possible reason: The network cable is disconnected or faulty.
DOWN ( Administratively ) The interface is physically down, because it was shut down with the shutdown
command. To restore its physical state, use the undo shutdown command.
DOWN ( Link-Aggregation
interface down )
The interface is physically down, because the aggregate interface
corresponding to the aggregation group to which it belongs was shut down
with the shutdown command.
DOWN ( OAM connection
failure )
The interface is physically down, because an OAM connection fails to be
established on it or the OAM connection is disconnected.
DOWN ( DLDP connection
failure )
The interface is physically down, because a DLDP connection fails to be
established on it or the DLDP connection is disconnected.
DOWN ( Loopback
detection-protected ) The interface is shut down, because a loop is detected on it.
DOWN ( BPDU-protected ) The interface is shut down by the BPDU guard function.
DOWN ( Monitor-Link uplink
down )
The interface is physically down, because the uplink of the monitor link group
to which it belongs is down.
# Display brief information about all interfaces.
<Sysname> display interface brief
The brief information of interface(s) under route mode:
Link: ADM - administratively down; Stby - standby

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Protocol: (s) - spoofing
Interface Link Protocol Main IP Description
NULL0 UP UP(s) --
Vlan1 UP UP 192.168.0.85
Vlan2 DOWN DOWN --
Vlan1010 DOWN DOWN --
The brief information of interface(s) under bridge mode:
Link: ADM - administratively down; Stby - standby
Speed or Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
GE1/0/1 DOWN 1G F A 1
GE1/0/2 DOWN 1G F A 1
GE1/0/3 DOWN 1G F A 1
GE1/0/4 DOWN 1G F A 1
GE1/0/5 DOWN 1G F A 1
GE1/0/6 DOWN 1G F A 1
GE1/0/7 DOWN 1G F A 1
GE1/0/8 DOWN 1G F A 1
GE1/0/9 DOWN 1G F A 1
GE1/0/10 DOWN 1G F A 1
# Filter the brief interface information to display the line starting with the (s) string and all subsequent
lines.
<Sysname>display interface brief | begin (s)
The brief information of interface(s) under route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) - spoofing
Interface Link Protocol Main IP Description
NULL0 UP UP(s) --
RAGG1 DOWN DOWN --
Vlan1 UP UP 192.168.0.55
Vlan2 DOWN DOWN --
When you use the begin keyword to filter the output, the system only searches the Layer 3 interface list or
the Layer 2 interface list. If regular-expression is on the Layer 2 interface list, the system only displays the
line that contains regular-expression, and all subsequent lines on the Layer 2 interface list.
<Sysname> display interface brief down
The brief information of interface(s) under bridge mode:
Link: ADM - administratively down; Stby - standby
Interface Link Cause
BAGG1 DOWN Not connected
GE1/0/1 DOWN Not connected
GE1/0/2 DOWN Not connected
GE1/0/4 DOWN Not connected
GE1/0/5 DOWN Not connected

12
Table 5 Command output
Field Description
The brief information of
interface(s) under route
mode:
The command displays brief information about Layer 3 interfaces.
Link: ADM -
administratively down;
Stby - standby
Link layer state of the interface:
•ADM—The interface has been shut down by the network administrator. To
recover its physical layer state, perform the undo shutdown command.
•Stby—The interface is a standby interface.
Protocol: (s) - spoofing
If the network layer protocol state of an interface is shown as UP, but its link is an
on-demand link or not present at all, its protocol attribute includes the spoofing
flag (an sin parentheses). This attribute is typical of interface Null 0 and the
loopback interfaces.
Interface Interface name.
Link
Physical link state of the interface:
•UP—The link is up.
•DOWN—The link is physically down.
•ADM—The link has been administratively shut down. To recover its physical
state, perform the undo shutdown command.
•Stby—The interface is a standby interface.
Protocol Protocol connection state of the interface, which can be UP, DOWN, or UP(s).
The brief information of
interface(s) under bridge
mode:
Brief information about Layer 2 interfaces.
Speed or Duplex: (a)/A -
auto; H - half; F - full
If the speed of an interface is automatically negotiated, its speed attribute
includes the auto negotiation flag, letter a in parentheses.
If the duplex mode of an interface is automatically negotiated, its duplex mode
attribute includes the following options:
•(a)/A—Auto negotiation
•H—Half negotiation
•F—Full negotiation
Type: A - access; T - trunk;
H – hybrid Link type options for Ethernet interfaces.
Speed Interface rate, in bps.
Duplex
Duplex mode of the interface:
•A—Auto-negotiation
•F—Full duplex
•F(a)—Auto-negotiated full duplex
•H—Half duplex
•H(a)—Auto-negotiated half duplex
Type
Link type of the interface:
•A—Access
•H—Hybrid
•T—Trunk
PVID Port VLAN ID of the interface.